Based in Northern Ireland, H.E.S. Alarms is a privately owned firm engaged in the installation and maintenance of domestic, industrial and commercial Intruder Alarm systems. The company is approved to the standards of 'BS EN ISO 9001:2008' and 'Quality Schedule SSQS 101 for the Installation and Maintenance of Electronic Security Systems including: Access Control, CCTV Systems and Intruder Alarms, and Fire Alarms.